KBE3D / KBCore / Cesium / WebMapServiceImageryProvider

类: WebMapServiceImageryProvider

Provides tiled imagery hosted by a Web Map Service (WMS) server.

示例

// WMS servers operated by the US government https://apps.nationalmap.gov/services/
const provider = new Cesium.WebMapServiceImageryProvider({
    url : 'https://basemap.nationalmap.gov:443/arcgis/services/USGSHydroCached/MapServer/WMSServer',
    layers : '0',
    proxy: new Cesium.DefaultProxy('/proxy/')
});
const imageryLayer = new Cesium.ImageryLayer(provider);
viewer.imageryLayers.add(imageryLayer);

参数

Object describing initialization options

属性

DefaultParameters

readonly static DefaultParameters: any

The default parameters to include in the WMS URL to obtain images. The values are as follows: service=WMS version=1.1.1 request=GetMap styles= format=image/jpeg

---

GetFeatureInfoDefaultParameters

readonly static GetFeatureInfoDefaultParameters: any

The default parameters to include in the WMS URL to get feature information. The values are as follows: service=WMS version=1.1.1 request=GetFeatureInfo

---

url

readonly url: string

Gets the URL of the WMS server.

---

proxy

readonly proxy: Proxy

Gets the proxy used by this provider.

---

layers

readonly layers: string

Gets the names of the WMS layers, separated by commas.

---

tileWidth

readonly tileWidth: number

Gets the width of each tile, in pixels.

---

tileHeight

readonly tileHeight: number

Gets the height of each tile, in pixels.

---

maximumLevel

readonly maximumLevel: number | undefined

Gets the maximum level-of-detail that can be requested.

---

minimumLevel

readonly minimumLevel: number

Gets the minimum level-of-detail that can be requested.

---

tilingScheme

readonly tilingScheme: TilingScheme

Gets the tiling scheme used by this provider.

---

rectangle

readonly rectangle: Rectangle

Gets the rectangle, in radians, of the imagery provided by this instance.

---

tileDiscardPolicy

readonly tileDiscardPolicy: TileDiscardPolicy

Gets the tile discard policy. If not undefined, the discard policy is responsible for filtering out "missing" tiles via its shouldDiscardImage function. If this function returns undefined, no tiles are filtered.

---

errorEvent

readonly errorEvent: Event

Gets an event that is raised when the imagery provider encounters an asynchronous error. By subscribing to the event, you will be notified of the error and can potentially recover from it. Event listeners are passed an instance of TileProviderError.

---

credit

readonly credit: Credit

Gets the credit to display when this imagery provider is active. Typically this is used to credit the source of the imagery.

---

hasAlphaChannel

readonly hasAlphaChannel: boolean

Gets a value indicating whether or not the images provided by this imagery provider include an alpha channel. If this property is false, an alpha channel, if present, will be ignored. If this property is true, any images without an alpha channel will be treated as if their alpha is 1.0 everywhere. When this property is false, memory usage and texture upload time are reduced.

---

enablePickFeatures

enablePickFeatures: boolean

Gets or sets a value indicating whether feature picking is enabled. If true, WebMapServiceImageryProvider#pickFeatures will invoke the <code>GetFeatureInfo</code> service on the WMS server and attempt to interpret the features included in the response. If false, WebMapServiceImageryProvider#pickFeatures will immediately return undefined (indicating no pickable features) without communicating with the server. Set this property to false if you know your data source does not support picking features or if you don't want this provider's features to be pickable.

---

clock

clock: Clock

Gets or sets a clock that is used to get keep the time used for time dynamic parameters.

---

times

times: TimeIntervalCollection

Gets or sets a time interval collection that is used to get time dynamic parameters. The data of each TimeInterval is an object containing the keys and values of the properties that are used during tile requests.

---

getFeatureInfoUrl

readonly getFeatureInfoUrl: string | Resource

Gets the getFeatureInfo URL of the WMS server.

方法

getTileCredits()

getTileCredits(x: number, y: number, level: number): Credit[]

Gets the credits to be displayed when a given tile is displayed.

参数

x

number

The tile X coordinate.

y

number

The tile Y coordinate.

level

number

The tile level;

返回

Credit[]

The credits to be displayed when the tile is displayed.

---

requestImage()

requestImage(x: number, y: number, level: number, request?: Request): Promise<ImageryTypes> | undefined

Requests the image for a given tile.

参数

x

number

The tile X coordinate.

y

number

The tile Y coordinate.

level

number

The tile level.

request?

Request

The request object. Intended for internal use only.

返回

Promise<ImageryTypes> | undefined

A promise for the image that will resolve when the image is available, or undefined if there are too many active requests to the server, and the request should be retried later.

---

pickFeatures()

pickFeatures(x: number, y: number, level: number, longitude: number, latitude: number): Promise<ImageryLayerFeatureInfo[]> | undefined

Asynchronously determines what features, if any, are located at a given longitude and latitude within a tile.

参数

x

number

The tile X coordinate.

y

number

The tile Y coordinate.

level

number

The tile level.

longitude

number

The longitude at which to pick features.

latitude

number

The latitude at which to pick features.

返回

Promise<ImageryLayerFeatureInfo[]> | undefined

A promise for the picked features that will resolve when the asynchronous picking completes. The resolved value is an array of ImageryLayerFeatureInfo instances. The array may be empty if no features are found at the given location.

构造函数

构造函数

new WebMapServiceImageryProvider(options: ConstructorOptions): WebMapServiceImageryProvider

参数

options

ConstructorOptions

返回

WebMapServiceImageryProvider